<section class="center-section-form medium">
  <div class="page-header">
    <h1>Sistema de Reclamos <small>Inicio de sesi&oacute;n</small></h1>
  </div>
  <div id="signin">
    <form id="login" action="<?php echo url_for('@sf_guard_signin') ?>" method="post" class="form-horizontal well">
      <div>
        <?php echo $form ?>
        <div class="form-actions">
          <button id="submit-login" type="submit" class="btn btn-primary">Iniciar Sesión</button>
        </div>
      </div>
    </form>
  </div>
</section>